Wire-stretcher.



PATENTED OCT. 10, 1905.

D D MILLER.

WIRE STRETGHER.

APPLICATION FILED FEB. 23,1905.

UNITED STATES D. D. MILLER, OF WOOSTER, OHIO.

WlRE-STRETCHER.

Specification of Letters Patent.

Patented Oct. 10, 1905.

Application filed February 23,1905. Serial No. 246,956.

To ctoZ whom it may concern:

Beit known that 1,1). D. MILLER, a citizen of the United States, residing at WVooster, Wayne county,Ohio,have invented new and useful Improvements in lVire-Stretchers, of which the following is a specification.

My invention relates to improvements in wire-stretching and hoisting devices, particularly with reference to the construction of the sheave-block of such devices and of the chainhook connected to the block to provide a swivel connection between the sheave-block and the chain-hook, as hereinafter described and claimed.

1n the accompanying drawings, Figure 1 is a perspective view of a wire-stretcher and hoisting device, showing a swivel connection embodying my improvements between the sheave-block and the chain-hook. Fig. 2 is a detail perspective View on a larger scale, showing the sheave-block and the chain-hook and omitting the rope. Fig. 3 is a detail sectional view showing the swivel connection between the sheave-block and the chain-hook, and Fig. 4 is a detail transverse sectional view of the chain-hook.

The sheave-block 1 comprises a central longitudinal plate 2 and a pair of outer plates 3. The plate 2 is formed or cast integrally with laterally-extending arms 4 at its ends, provided with studs 5, which pass through openings in the ends of the outer plates and have their outer ends upset or swaged to secure the outer plates to the said arms. The usual sheaves 6 are mounted between the center plate 2 and outer plates 3 for rotation on an axle 7. The swinging arm 8, locking-segments 9, carried thereby for locking and releasing the rope, and the link 10, which has one end pivotally connected to the said segments and the other end pivotally connected to the sheave-block, are of the construction described in Letters Patent of the United States No. 52 1, 103, dated August 14, 1894:, and form no part of my present improvements. The center plate 2 of the sheave-block is formed at one end with an eye 11 for the attachment of one end of the rope and is formed at its opposite end with a stud 12 of cylindrical form which is provided at its outer end with an enlarged circular head 13.

A chain-hook 14 is formed on a pair of matched longitudinally-separable sections 15, each of which has a stud 16 projecting from its inner side and an opening 17 to receive the stud of the other section, the said studs when the sections have been assembled having their upper ends offset or swaged, so as to lock the said sections together, as will be understood. The said sections of the chain-hook are formed at their inner ends on their inner opposing sides with an opening 18 to receive and engage the stud 12 of the sheave-block and with an opening or socket 19 for the reception ofthe head 13 of the sheave-block stud, a shoulder 20 being formed between the said openings 18 and 19, which sheave coacts with the inner side of the head 13 to lock the sheave-block to the chain-hook. The stud with its head and the chain connections with their openings 18 19 form a swivel connection between the sheave-block and the chain-hook whereby the sheave-block may be turned with reference to the chain-hook, as will be understood.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invention will be readily understoodwithout requiring a more extended explanation.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. In combination with a sheave-block having a headed stud, a chain-hook comprising a pair of longitudinally-separable sections, each having a stud projecting from its inner side, and an opening to receive the stud of the other section, said sections being formed in their opposing sides with openings for the reception of the stud and head of the sheave-block, to effect a swivel communication between the sheave-block and the chain-hook, substantially as described.

2. In combination with a sheave-block having a headed stud, a chain-hook comprising a pair of longitudinally-Separable sections pro- In testimony whereof I have hereunto set viclecl With means for securing them together, my hand in the presence of two subscribing said sections being formed in their opposing Witnesses.

sides With openings for the reception of the stud and head of the sheave-block to effect a Witnesses:

swivel connection between the sheave-block MARIE ZURCI-IER, and the chain-hook, substantially as described. CHAS. M. BALL.

D. D. MILLER. 

